Control method, controller, and device

1. A method of controlling a device located in a predetermined space, the method comprising: obtaining sleep information of a person present in a first space from a biological sensor disposed in the first space, the sleep information indicating a sleep state of the person and the first space includes a first device; determining, by a processor, a first illuminance level to be set for the first device based on the obtained sleep information and a first database indicating a correspondence between the sleep state and a target illuminance level of a corresponding device, the target illuminance level of the corresponding device being a predetermined illuminance level which does not awake a sleeping person at the sleep state and provides visibility for an awake person; transmitting, to the first device, a first command for setting the first illuminance level in the first device as an illuminance upper-limit value; and correcting the target illuminance level indicated by the first database based on sleep log information indicating log information as to the sleep state and operation information indicating a history of changing an illuminance level of the first device.

2. The method according to claim 1 , wherein the first database further indicates a correspondence between the sleep state and a target sound volume of the corresponding device, and the method further comprising: determining, by the processor, a first sound volume of the first device based on the obtained sleep information and the first database, and transmitting, to the first device, a second command for setting the first sound volume in the first device as a sound volume upper-limit value, the target sound volume of the corresponding device being a predetermined sound volume which does not awake the sleeping person at the sleep state and still be heard by the awake person.

3. The method according to claim 1 , wherein the biological sensor is attached to the person.

4. The method according to claim 1 , wherein the first space includes a bedroom.

5. The method according to claim 4 , wherein the biological sensor includes a vibration sensor installed in a bedding disposed in the bedroom.

6. The method according to claim 4 , wherein the biological sensor includes a radio sensor inside a bedding disposed in the bedroom or installed in a predetermined range from the bedding.

7. The method according to claim 1 , wherein the biological sensor measures a body motion, a respiration rate, and a heart rate of the person, and the sleep information is calculated based on a number of times the person turns-over per unit time calculated from the body motion, the respiration rate of the person, and the heart rate of the person.

8. The method according to claim 1 , further comprising: storing the sleep log information in a memory, the sleep log information further indicating a correspondence between the sleep state and a corresponding date, storing the operation log information in the memory, the operation log information further indicating a correspondence between a history of changing an illuminance level of the first device and a corresponding date, and determining, by the processor, based on the sleep log information and the operation log information, whether the sleep state indicated in the sleep information becomes shallow after increasing the illuminance level of the first device, wherein, in the correcting, the target illuminance level indicated by the first database is corrected when it is determined by the processor that the sleep state indicated in the sleep information becomes shallow a predetermined number of times or more after the increasing the illuminance level of the first device.

9. A method of controlling a device included in a predetermined space, the method comprising: receiving, from a processor, a first command for setting a first illuminance level in the device as an illuminance upper-limit value; and setting, by the processor, the first illuminance level as the illuminance upper-limit value in the device, wherein the first illuminance level is determined by the processor based on a database and sleep information of a person present in the predetermined space, the sleep information being obtained from a biological sensor disposed in the predetermined space, the sleep information indicates a sleep state of the person, the database indicates a correspondence between the sleep state and a target illuminance level of a corresponding device, the target illuminance level of the corresponding device is a predetermined illuminance level which does not awake a sleeping person at the sleep state and provides visibility for an awake person, and the target illuminance level is corrected based on sleep log information indicating log information as to the sleep state and operation information indicating a history of changing an illuminance level of the device.

10. The method according to claim 9 , further comprising: receiving, from the processor, a second command for setting a first sound volume in the device as a sound volume upper-limit value; and setting the first sound volume in the device as the sound volume upper-limit value, wherein the database further indicates a correspondence between the sleep state and a target sound volume of a corresponding device, the first illuminance level is determined by the processor based on the sleep information and the database, and the target sound volume of the corresponding device is a predetermined sound volume which does not awake the sleeping person at the sleep state and still be heard by the awake person.

11. The method according to claim 9 , further comprising: determining, by the processor, whether a second illuminance level, which is an illuminance level setting different from the first illuminance level, exceeds the first illuminance level that is set as the illuminance upper-limit value; and causing the device to output light at the first illuminance level when it is determined that the second illuminance level exceeds the first illuminance level.

12. The method according to claim 11 , further comprising: changing an illuminance level of the device from the second illuminance level to the first illuminance level at a predetermined rate of change in a stepwise manner.

13. The method according to claim 9 , further comprising: changing an illuminance level of the device to the first illuminance level or lower at a predetermined rate of change in a stepwise manner.

14. The method according to claim 9 , wherein the device includes a display, and the method further comprising: determining whether a second illuminance level, which is a current illuminance level of the device, exceeds the first illuminance level, and causing a notification prompting for decreasing an illuminance level of the device in a stepwise manner to be displayed on the display when it is determined that the second illuminance level exceeds the first illuminance level.

15. A controller which controls a device included in a predetermined space, the controller comprising: a communicator; and a processor, wherein the communicator obtains sleep information of a person present in the predetermined space from a biological sensor disposed in the predetermined space, the sleep information indicating a sleep state of the person, the processor determines a first illuminance level of the device based on a database indicating a correspondence between the sleep state and a target illuminance level of a corresponding device, the target illuminance level of the corresponding device being a predetermined illuminance level which does not awake a sleeping person at the sleep state and provides visibility for an awake person, the communicator transmits, to the device, a command for setting the first illuminance level in the device as an illuminance upper-limit value, and the target illuminance level is corrected based on sleep log information indicating log information as to the sleep state and operation information indicating a history of changing an illuminance level of the device.

16. A device installed in a predetermined space, the device comprising: a communicator; and a processor, wherein the communicator receives, from a controller connected to the device, a first command for setting a first illuminance level in the device as an illuminance upper-limit value, the processor sets the first illuminance level as the illuminance upper-limit value in the device, the first illuminance level is determined by the controller based on a database and sleep information of a person present in the predetermined space, the sleep information being obtained from a biological sensor disposed in the predetermined space, the sleep information indicates a sleep state of the person, the database indicates a correspondence between the sleep state and a target illuminance level of a corresponding device, the target illuminance level of the corresponding device is a predetermined illuminance level which does not awake a sleeping person at the sleep state and provides visibility for an awake person, and the target illuminance level is corrected based on sleep log information indicating log information as to the sleep state and operation information indicating a history of changing an illuminance level of the device.

17. The method according to claim 1 , wherein the target illuminance level corresponding to the first device is an illuminance level of the first device in the first space, the illuminance level at which the first device does not awake the sleeping person at the sleep state that is in the first space and provides visibility for the awake person that is in the first space.

18. The method according to claim 6 , wherein the radio sensor is configured to: transmit an electromagnetic wave, and receive the electromagnetic wave reflected on the person.